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The Role of Scientists in the Professional Development of Science Teachers (1996) / Chapter Skim
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Appendix H-2
Pages 225-227

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From page 225...
... The growth of a population of plants establishing itself in a new area typically follows an S-shaped curve. This curve consists of three phases: 1.
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From page 226...
... 6 petri dishes duckweed marking pens inoculation loops PROCEDURE 1. Take 6 sterile petri dishes and label each with your initials and one pH value starting with 4 for the first dish, continuing until the last dish is labeled 9.
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From page 227...
... Your Null Hypothesis here would be that all the populations of duckweed grew at the same rate despite the pH. F test value = Degrees of freedom for numerator = Degrees of freedom for denominator Critical F value on the ANOVA chart Do you reject of fail to reject your Null Hypothesis?
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Key Terms

  • culture media
  • plus liquid
  • liquid fertilizer
  • dishes duckweed
  • test value

  • compare growth
  • statistical anova
  • remain undisturbed
  • inoculating loop
  • denominator critical

  • loop transfer
  • tap water
  • marking pens
  • pens inoculation
  • plant lobes

  • duckweed plant
  • decholorinated tap
  • following charts
  • duckweed grew
  • sterile petri

  • water plus
  • labeled petri
  • collect class
  • value starting
  • dishes add

  • duckweed marking
  • rate despite
  • graduated cylinder
  • class data
  • null hypothesis


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